... different kinds of plastic bags. It is located in the beautiful coastal city---Cheng yang, Qingdao, covers an area of ... and have exported to about 20 countries in the world and can supply 15 containers in one month, and we are going to ... up, zipped, heat-sealed, heat-cut, cold-cut, blown, sealed-in the-middle, three-side-sealed, with handle or hanger holeCertificates available ...